Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021		Jul. 31, 2020
Income Statement [Abstract]
Net sales	$ 59,022	$ 59,456	$ 87,389		$ 77,273
Costs of goods sold	36,703	36,253	57,382		49,166
Gross profit	22,319	23,203	30,007		28,107
Selling, general and administrative expenses	16,251	15,488	28,234		27,419
Operating income	6,068	7,715	1,773		688
Pension expense	724	542	1,230		1,084
Interest expense	359	494	652		898
Income (loss) before income taxes	4,985	6,679	(109)		(1,294)
Income tax expense (benefit)	1,225	3,126	40		(149)
Net income (loss)	$ 3,760	$ 3,553	$ (149)		$ (1,145)
Net income (loss) per common share
Basic (usd per share)	$ 0.24	$ 0.23	$ (0.01)		$ (0.07)
Diluted (usd per share)	$ 0.24	$ 0.23	$ (0.01)	[1]	$ (0.07)	[1]
Weighted average shares of common stock outstanding:
Basic (shares)	15,920	15,733	15,872		15,694
Diluted (shares)	15,929	15,746	15,872	[1]	15,694	[1]

[1] Net loss per common share was calculated based on basic shares outstanding due to the anti-dilutive effect on the inclusion of common stock equivalent shares.